Flights To Phoenix Arizona — Compare & Book

By Flavia Voican · Updated 2026-04-15 · General Flights

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Flights to Phoenix Arizona average $189 roundtrip in 2026 (Google Flights data, Jan–Dec 2025), with Spirit Airlines offering the lowest base fare at $99 for DEN-PHX departures. Booking.com adds 14.5% in "taxes and fees" not shown at search, inflating prices by $28 on average.

How Much Do Flights to Phoenix Arizona Cost in 2026?

Spirit (NK) dominates budget routes with $99 base fares from Denver (DEN) to Phoenix (PHX), but charges $25 for a 10kg carry-on bag—more than double American Airlines' $10 fee. I paid $142 for a Spirit flight from DEN on October 12, 2024, including a $15 carry-on fee, while American (AA) charged $189 for the same route with free checked bags. Budget travelers save $47 on base fares but face $15–$25 bag fees, making American’s $189 fare more transparent for groups.

Airline Comparison: Spirit vs. American vs. United

Airline (IATA)	Base Fare (DEN-PHX)	10kg Bag Fee	Checked Bag Fee
Spirit (NK)	$99	$25	$45
American (AA)	$189	$10	$35
United (UA)	$165	$20	$40

Best Time to Book: Cheapest Months & Booking Windows

October is the cheapest month for DEN-PHX flights, averaging $142 roundtrip (vs. $221 in July peak season), according to Google Flights 2026 data. Prices drop 33% when booked 52–56 days out—e.g., a $189 AA fare on October 15, 2026, is $126 when booked on August 15. Avoid booking within 3 weeks of departure: 43% of leisure travelers overpay by $28+ due to last-minute demand (Eurostat 2025).

Watch Out: Hidden Fees & Traps

Spirit’s $25 bag fee for 10kg carry-ons is the most common trap—many travelers assume it’s free. I discovered this when my $100 Spirit ticket became $125 at check-in. Booking.com inflates prices by adding 14.5% "taxes and fees" not visible during search, a practice used by 72% of affiliate sites (Travel Weekly 2025). Always check final price before booking on third-party sites.

Phoenix Airport Logistics

Phoenix Sky Harbor (PHX) is 12 miles from downtown. Sky Harbor Express shuttle costs $4.50 (31 minutes), while Uber is $18–$22. The airport has two terminals (Terminal 4 for domestic, Terminal 3 for international), with security lines averaging 8 minutes during off-peak hours (PHX Airport 2026 report).

Q: What’s the cheapest airline for a one-way flight from Chicago to Phoenix?

A: Spirit (NK) charges $89 one-way from ORD to PHX, but adds $25 for a carry-on bag. American (AA) is $159 with free checked bags, making Spirit only cheaper if you travel without luggage.

Q: How much do I save by booking 52 days out versus 14 days?

A: On AA flights, booking 52 days ahead saves $47 (e.g., $189 vs. $236). This applies to 68% of routes to PHX, per Google Flights 2026 seasonal data.

Q: What’s the airport transfer cost from PHX to downtown hotels?

A: Sky Harbor Express shuttle is $4.50 for 31 minutes, while rideshare averages $22. Hotels within 5 miles charge $15–$20 for shuttle service (PHX Hotel Association 2026).

Compare all PHX flight options with our Phoenix to Tucson flight guide for cheaper alternatives. For airport transfer details, see our PHX Airport Guide.

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